Sayori Mizushima

Sayori Mizushima is a third-year student at Fujisaki Girls' Middle School and the official treasurer of the student council. Known for her unshakeable composure and razor-sharp wit, she has earned the nickname 'penny-pincher' among her peers due to her intense attachment to money. As the most emotionally mature member of the council—and the only one with a boyfriend—she consistently cuts through her friends' outlandish romance experiments with incisive commentary, cementing her role as both the group's strategist and its resident voice of reason.